1, skin problems With the increase of age, the sebum of the elderly becomes thinner and the skin is often dry. Exfoliated dander becomes a feast for mites and other bacteria. It is not only easy to cause skin infections, but also these parasitic pathogens will emit unpleasant smells during reproduction. However, the skin of the elderly is wrinkled, which makes it easier to hide evil and shelter evil.

2. In addition, the qualitative change of skin antioxidants in the elderly is less, and the change of hormones leads to the oxidation of more free fatty acids, including the accumulation of nonenal that causes special odor.

3, natural aging problems The elderly are old and weak, and various functions such as digestion, urination and reproduction are declining. For example, the digestive ability of the elderly is mostly reduced. If they like to eat high-protein foods such as meat and seafood, they are prone to indigestion and bad breath.

4. Most elderly women have different degrees of urinary incontinence and senile vaginitis, and elderly men are also the most prone to prostatic hyperplasia, endless urination, and urine stains on their pants. These smells from the lower body are often an important part of the smell of the elderly.

5, the signal of disease. The smell of the elderly may also be a signal of some diseases. Old people often suffer from various chronic diseases. The teeth of the elderly are usually bad, with more rotten teeth and missing teeth, and bad breath is common; Patients with chronic bronchitis and emphysema often cough up phlegm, accompanied by unpleasant smell of phlegm; Senile arthritis, applying medicinal oil and sticking plaster, brings rich ointment flavor.